Shipping overseas is convenient since the RF Board is packed in QFN.There are 0 pins on this high power RF circuit board.The Evaluation board type is Amplifier.Try searching with HMC921 to find RF Board variants.The mount is attached to PCB.
130007-HMC921LP4E Features
Packed in QFN 0 pins Amplifier Type
130007-HMC921LP4E Applications
There are a lot of Analog Devices Inc. 130007-HMC921LP4E RF Boards applications.